Carlyle Compressor Div. P O Box 4808 Syracuse, NY 13221
Phone: 800-462-2759 Fax: 315-432-3274
9
controls the Vi output accordingly. The Vi control effects compressor power only and
has no effect on compressor capacity. It is controlled for optimal compressor efficiency.
The module has a 30 second time delay before controlling the Vi output. This insures
that the compressor starts in the low Vi (solenoid de-energized) setting.
05TA & 06TA air conditioning screw compressors do not have a Vi valve.
ALM Alarm Output
Energized whenever the module enters an alarm state (compressor may or may not be
operating depending on the severity of the alarm). The coded alarm light (amber) on the
module is flashed at the respective rate in order to indicate the compressor alarm. The
flashing is repeated after a short pause. Each of the sensor failure alarms is preceded
by a long dash. A comprehensive explanation of the alarm states, including the
operational criteria and which alarms require a power reset to clear, is presented in
Appendix D.
3.4 Special Instructions for 05T Installations
The only module application differences between 05T and 06T compressors are:
1. Since the 5K motor thermistor is not available for the open drive 05T
compressors, a 5.1Kohm resistor (simulating a 76 F temperature reading)
should be placed across the motor temperature input. Any ¼ watt carbon film
5.1 Kohm +/-5% resistor, available from many electronic part stores, is
acceptable.
2. The oil pressure access fitting on the 06T compressor is not available on the
05T compressors. Therefore, a T-fitting should be supplied at the oil
pressure transducer fitting for field gauge readings.
3.5 LonWorks Communication/Control Summary
Modules are available with and without the LonWorks communications (see section 2).
LonWorks modules include an FTT10A transceiver allowing them to be connected to
other devices over a LonWorks control network. This allows additional control
functionality as well as access to sensor input values and memory storage. A detailed
summary of the network variables is included in the “LonCEM Network Interface Notes”
document available from Carlyle Application Engineering. Additional information on
LonWorks can be found at www.echelon.com
. Following is an overview of the
LonWorks Communication / Control functions:
Additional Control Functions
• Compressor ON/OFF Control
• Compressor Unloader Control
• Module Reset
Available Inputs
All of the modules sensor inputs can be polled over the network including:
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